jigger mast


Also found in: Wikipedia.
Related to jigger mast: mizzenmast, mizzen

jigger mast

n.
1. The short mast located toward the stern on a ketch or yawl, from which the jigger sail is set.
2. The fourth mast aft on a schooner having five or more masts.
3. The aftmost mast on a bark or ship having four or more masts.